Question

Which is the correct formula used to calculate work?

A W = ld
B W = Fh
C W = lh
D W = Fd

Answer 1

d work = force times distance ... if force is constant

Answer 2

Work, W =Fd

Step-by-step explanation:

Work is said to be done when a force is applied on an object in order to create some displacement. The mathematical expression for work done is given as:

W = F. d

Where

F is the applied force

d is the displacement

Work done also depend on the angle between the force and the displacement i. e.

`W=Fd\ cos\ \theta`

`\theta` is the angle between F and d

When the force and displacement are in same direction then
`\theta=0`. It gives W = F. d

When the force and displacement are perpendicular to each other,
`\theta=90`. It gives W = 0

Similarly, When force and displacement are in opposite direction,
`\theta=180`. It gives W = - F. d

So, the correct option is (D) '' W =Fd ''